Old-style Signal and Slot Support — PyQt 4.9.4 Reference Guide This older style of connecting signals and slots will continue to be supported throughout the life of PyQt v4. ... The returned value is normally passed to the QtCore. ... PyQt allows any Python callable to be used as a slot, not just Qt slots. This is ... Talking to Qt Threads – Dave Smith's Blog 7 Feb 2010 ... If you have an event loop, you can use Qt's meta-objects to talk to your thread. ... this, SLOT(doSomething())); timer->start(0); exec(); // starts the event loop, ... else invokeMethod() will return false and not actually re-invoke stop() for you. ... the real work: #define THREAD_MAGIC(targetThread, returnValue, ...
Function with Signals & Slots Function with Signals & Slots @gabor53 You should read again about Qt signals/slots. They are used for asynchronous communication and to react on user interactions. ... How can I return the value before the add layout section so I would be able to display the image next to the button? (That was the original ...
The goal of the slots is not to return values. Can you explain exactly what you are trying to achieve ? Interested in AI ? www.idiap.ch Need programmers to hire ? www.edeltech.ch. But the problem is, the doWork() slot also contains a Qt Network request, which is connected to syncRequestFinished() slot. c++ - QT signal and slot function signature - Stack Overflow QT signal and slot function signature. But the slot is a normal member function and can be called like any other function. In this case, the return value can be used by the caller. This is said in the document you link to : Since slots are normal member functions, they follow the normal C++ rules when called directly. c++ - QT return value from a signal? - Stack Overflow
Qt provides the ability of getting the root interface of a plugin and performing dynamic casts on the object. There can be only one instance of any plugin object in the system because of the way Qt handles it. If multiple instances are need, a factory plugin object must be defined. The factory object can provide a public slot to create and ...
I'm running all my SQLite database operations in a separate thread to ensure that the GUI wont freeze up. I'm doing this by connecting up signals and slots for the methods. However now I need to Slot with return value called via Signal between differen What you are seeing is undefined behaviour. Signals are not designed to give you the slots' return values, and there is no guarantee that your example will behave the same way in future versions of Qt. Make sure your code never tries to get the return value of a slot through a signal. PyQt slot return value | Qt Forum Qt Development Language Bindings PyQt slot return value PyQt slot return value. This topic has been deleted. Only users with topic management privileges can see it. thumperj. last edited by . Any help with this would be appreciated, including hints on how to debug further. The pyqtSlot decorator takes a result as one of the parameters.
[Solved] Return value from dialog | Qt Forum
Function with Signals & Slots | Qt Forum Function with Signals & Slots Function with Signals & Slots ... @gabor53 You should read again about Qt signals/slots. They are used for asynchronous communication and to react on user interactions. ... How can I return the value before the add layout section so I would be able to display the image next to the button? (That was the original ...
Best Practices in Qt Quick/QML - Part III - SlideShare
Mar 9, 2017 ... we can test the return value (for instance, by adding an assertion), or ... Qt automatically breaks a signal/slot connection if either the sender or ... Qt Signals And Slots - Programming Examples
The QDialog class is the base class ... slot. Alternatively you can call ... The Extension Example shows how to achieve extensible dialogs using Qt. Return Value ... Qt 4.8: QDialog Class Reference The QDialog class is the base class ... slot. Alternatively you can call ... The Extension Example shows how to achieve extensible dialogs using Qt. Return Value ... New-style Signal and Slot Support — PyQt 4.12.3 Reference ... New-style Signal and Slot Support ... This means that they will appear in Qt Designer and can be introspected using ... When the value of the spin box changes both of ... Qt 4.2: QDialog Class Reference - cep.xray.aps.anl.gov QDialogs can provide a return value, ... slot. Alternatively you can call ... The Extension Example shows how to achieve extensible dialogs using Qt. Return Value ...